In 2010, a 25-year-old American could expect to live to the age of 79.34. By 2017, that dropped to 79.15, continuing a troubling trend of decreased life expectancy in the nation.
Now, an international group of researchers has published a study exploring which Americans live longer. Their conclusion?
"[E]stimated life expectancy at age 25 years declined overall between 2010 and 2017," the authors wrote in their study, which was published in the Journal of the American Medical Association on Tuesday. "However, it declined among persons without a 4-year college degree and increased among college-educated persons."
According to the researchers, this difference extended across nearly all race and sex groups studied — whether white or black, a man or a woman, if a person had a four-year college education, their life expectancy likely increased.
For their study, the researchers also looked at the causes of mortality in 4.6 million death records from 2010 and 2017.
"A lot of attention has been given lately to opioid- and drug-related deaths, which have risen significantly in the U.S. in recent years," researcher Isaac Sasson told Medical Research. "Our findings show that indeed drug-related deaths account for a substantial loss of life years, on average, at the population level."
"For example," he continued, "among white men, drug related deaths were responsible for 0.5 years of life lost in 2010, which nearly doubled by 2017. However, among men with a high-school degree [or] lower, drug-related deaths were responsible for a staggering 1.7 years of life lost in 2017."
Sasson went on to note that America should consider how social inequality relates to mortality when crafting policies on both the national and state levels.
"Numerous studies have shown the rising importance of education to health and longevity," he told Medical Research. "In addition to being a marker of socioeconomic status, educational attainment confers tangible rewards, both intrinsic and extrinsic, which are linked to healthier lifestyles and better health outcomes."
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READ MORE: Study: College Degrees Increase Life Expectancy [U.S. News]
More on mortality: CDC: People in the United States Aren’t Living as Long